Manga artists guide the eye with panel shape, contrast, and breathing room....

https://manuelsbrilliantchat.lumenforgex.com/posts/how-do-i-make-dialogue-text-readable-on-mobile-without-ruining-the-art

Manga artists guide the eye with panel shape, contrast, and breathing room. Mobile casino screens face the same challenge: make the main action obvious, keep controls readable, and help text stand out on a small phone